Form: 97 BB
Date: Thu, 13 Apr 2006 23:15:20 +0100 (BST)
From: daniel wilson <>
Subject: Flying discs observed near the observatory at Mt. Palomar, Nov. 25, 1949
Cat: 10

Nov. 25, 1949; Mt. Palomar, California
Flying discs first observed near the observatory at Mt. Palomar. A recording geiger counter was so activated at the times of these sightings, that it went completely off scale. Written off as an equipment malfunction, a loose fuse clip. Not only would this turn the equipment off, instead of on, the Project Record Card mentions  a radar tracking.

Francis Ridge:
See: The Radiation Story (Ruppelt)
The Radiation Story (Chapter 15, Report on Unidentified Flying Objects, Ruppelt)
and sighting listings for November, BB Archive mentions a radar
Page ID (PID)  MAXW-PBB7-907
Collection  NARA-Maxwell
Roll Description  Maxwell Blue Book 7
Document Code  N/A
Frame  907  

Detection of UFOs by Geiger Counters - BB Archive Correspondence
In regard to the 12 & 21 Oct 1949 cases at Mt. Palomar Observatory in the NICAP chronology and Sparks' "BB Unknowns" list: The 25 Nov 1949 "case" in the Blue Book Archive contains some material on this incident. It is not actually a case file, but a collection of correspondence related to the potential detection of atomic powered UFOs by geiger counter equipment, which was put together in 1952. There are several pages about the events and witnesses at Mt. Palomar.